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Finding the Fourth Proportional to 448,074.67, 618,571.58 and 303,643.48

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Solution

The fourth proportional to 448,074.67, 618,571.58 and 303,643.48 is: 419,182.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,074.67 : 618,571.58 = 303,643.48 : x
  2. Step 2: Convert to fraction form
    448,074.67/618,571.58 = 303,643.48/x
  3. Step 3: Cross multiply
    448,074.67x = 618,571.58 × 303,643.48
  4. Step 4: Simplify right side
    448,074.67x = 187,825,227,180.30
  5. Step 5: Solve for x
    x = 187,825,227,180.30/448,074.67
  6. Step 6: Final answer
    x = 419,182.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.